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Jumping Sundogs, Cat’s Eye and Ferrofluids

Soft Matter Lab, School of Arts, Sciences and Humanities, University of São Paulo, São Paulo 03828-000, Brazil
Technical Space Science Center, 235 Martindale Drive, Morehead State University, Morehead, KY 40531, USA
Ferrocell USA, 739 Route 259, Ligonier, PA 15658, USA
Author to whom correspondence should be addressed.
Condens. Matter 2020, 5(3), 45;
Received: 20 April 2020 / Revised: 24 June 2020 / Accepted: 2 July 2020 / Published: 8 July 2020
We have explored some features of the complex fluids present in Earth’s atmosphere by the observation of some optical phenomena and compared them to the optical phenomena observed in gems and magnetic materials. The main feature of a complex fluid is that it contains polyatomic structures such as polymer molecules or colloidal grains. This paper includes some setups using tabletop experiments, which are intended to show concretely the principles discussed, giving a sense of how well the idealizations treated apply to the atmospheric systems. We have explored sundogs, light pillars, and the halo formation, which involve the existence of a certain structure in the atmospheric medium, resembling the structures observed in some types of gems and ferrofluids. View Full-Text
Keywords: sundogs; crown flash; ferrofluids; complex fluids; polarization; cat’s eye effect sundogs; crown flash; ferrofluids; complex fluids; polarization; cat’s eye effect
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MDPI and ACS Style

Tufaile, A.; Snyder, M.; Vanderelli, T.A.; Tufaile, A.P.B. Jumping Sundogs, Cat’s Eye and Ferrofluids. Condens. Matter 2020, 5, 45.

AMA Style

Tufaile A, Snyder M, Vanderelli TA, Tufaile APB. Jumping Sundogs, Cat’s Eye and Ferrofluids. Condensed Matter. 2020; 5(3):45.

Chicago/Turabian Style

Tufaile, Alberto, Michael Snyder, Timm A. Vanderelli, and Adriana P.B. Tufaile. 2020. "Jumping Sundogs, Cat’s Eye and Ferrofluids" Condensed Matter 5, no. 3: 45.

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